CN114652623A

CN114652623A - Aqueous liquid cosmetic and pen-type cosmetic

Info

Publication number: CN114652623A
Application number: CN202111581707.2A
Authority: CN
Inventors: 荻野一纪
Original assignee: Tokiwa Corp
Current assignee: Tokiwa Corp
Priority date: 2020-12-23
Filing date: 2021-12-22
Publication date: 2022-06-24
Also published as: JP2022099835A; US20220192945A1

Abstract

The present invention provides an aqueous liquid cosmetic composition comprising (A) an inorganic coloring pigment, (B) an anionic dispersant, and (C) a film-forming polymer emulsion, wherein the content of component (A) is 11 to 35% by mass based on the total amount of the cosmetic composition, and the component (A) contains (A1) titanium black having a primary particle diameter of 0.15 [ mu ] m or more, and (A2) at least one iron oxide selected from the group consisting of red iron oxide, black iron oxide, and yellow iron oxide, and the content of component (B) is 8 parts by mass or less based on 100 parts by mass of the total amount of components (A1) and (A2).

Description

Aqueous liquid cosmetic and pen-type cosmetic

Technical Field

The present invention relates to an aqueous liquid cosmetic and a pen-type cosmetic.

Background

As a product form of the liquid cosmetic, an automatic pen type cosmetic is used which discharges the cosmetic by the action of the surface tension of the liquid cosmetic and capillary phenomenon. In such cosmetics, an aqueous liquid cosmetic is generally used from the viewpoint of easy acquisition of good discharge properties, high drying speed after application, and the like. On the other hand, aqueous liquid cosmetics tend to have poor water resistance. In general, water-insoluble coating agents are used in cosmetic compositions such as eyeliner to improve water resistance. In the case of an aqueous liquid cosmetic, for example, jp 2003-073220 a proposes a liquid cosmetic containing an emulsion of a polymer and/or copolymer (excluding polystyrene) of a monomer selected from acrylic acid, alkyl acrylate, methacrylic acid, alkyl methacrylate, vinyl acetate and styrene.

Disclosure of Invention

In recent years, demands for colors other than black and brown have been increasing in liquid eyeliners, eyebrow cosmetics, and the like. Therefore, an inorganic pigment such as red iron oxide, yellow iron oxide, titanium dioxide, or iron blue, or another pigment such as an organic colorant lake may be mixed with a black pigment such as black iron oxide or carbon black.

However, it has been found that if an aqueous liquid cosmetic composition in which a pigment is used as the above-mentioned mixed system is used as an automatic pen type cosmetic composition, a shade difference and a color difference may occur in a drawn line.

The present invention has been made in view of the above circumstances, and an object thereof is to provide an aqueous liquid cosmetic composition which can be discharged even when used as an automatic pen type cosmetic composition, has sufficient water resistance, and can form a trace line that suppresses a shade difference and a color difference, and a pen type cosmetic composition containing the aqueous liquid cosmetic composition.

In order to solve the above-mentioned problems, the present invention provides an aqueous liquid cosmetic composition comprising (a) an inorganic coloring pigment, (B) an anionic dispersant, and (C) a film-forming polymer emulsion, wherein the content of the component (a) is 11 to 35% by mass based on the total amount of the cosmetic composition, the component (a) contains (a1) titanium black having a primary particle size of 0.15 μm or more and (a2) at least one iron oxide selected from the group consisting of red iron oxide, black iron oxide, and yellow iron oxide, and the content of the component (B) is 8 parts by mass or less based on 100 parts by mass of the total amount of the components (a1 and a 2).

According to the aqueous liquid cosmetic of the present invention, by having the above composition, even when used as an automatic pen, the cosmetic can be discharged, has sufficient water resistance, and can form a trace line that suppresses a shade difference and a color difference. The reason why the above-described effects can be obtained is presumed as follows. By combining the component (a1) and the component (a2) in an aqueous liquid cosmetic containing the component (C) and using the component (B) in a specific ratio or less to the component (a1) and the component (a2), it is possible to maintain the dispersed state of the component (a1) and the component (a2) well while suppressing the decrease in water resistance due to the anionic component. From this, the inventors of the present invention concluded that the aqueous liquid cosmetic composition can satisfy all of sufficient discharge properties, water resistance of the cosmetic film, and suppression of shade difference and color difference of the drawn line.

From the viewpoint of discharge properties, the viscosity of the aqueous liquid cosmetic composition at 25 ℃ may be 50mPa · s or less. In this case, it is easy to stably discharge the cosmetic by the automatic pen-type applicator.

In addition, the mass ratio of the component (a1) to the component (a2) [ (a1)/(a2) ] may be 1/10 to 6/1 in order to further improve color developability, suppression of shading and color difference of the line, and discharge properties.

The present invention also provides a pen-type cosmetic including an automatic pen-type applicator and the aqueous liquid cosmetic filled in the applicator.

According to the present invention, it is possible to provide an aqueous liquid cosmetic composition which can be discharged even when used as an automatic pen type, has sufficient water resistance, and can form a trace line that suppresses a shade difference and a color difference, and a pen type cosmetic composition containing the aqueous liquid cosmetic composition.

Drawings

Fig. 1 is a schematic sectional view for explaining a pen type cosmetic.

Detailed Description

The aqueous liquid cosmetic composition of the present embodiment contains (a) an inorganic coloring pigment (hereinafter, sometimes also referred to as component (a)), (B) an anionic dispersant (hereinafter, sometimes also referred to as component (B)), and (C) a film-forming polymer emulsion (hereinafter, sometimes also referred to as component (C)).

In the present specification, the term "aqueous" means containing at least water. The aqueous cosmetic composition may further contain a lower alcohol having 1 to 5 carbon atoms such as ethanol in addition to water.

The content of water in the aqueous liquid cosmetic of the present embodiment may be 30 to 85 mass%, 40 to 80 mass%, or 50 to 70 mass% based on the total amount of the cosmetic.

In the present specification, the term "liquid" means that the liquid exhibits fluidity at 25 ℃. The viscosity of the aqueous liquid cosmetic of the present embodiment at 25 ℃ may be 10000mPa · s or less, and may be appropriately set according to the form of the container. For example, in the case of a pen type cosmetic, it is preferable that the viscosity at 25 ℃ is 5000 mPas or less.

From the viewpoint of improving the discharging property in an automatic pen type, the viscosity of the aqueous liquid cosmetic composition according to the present embodiment at 25 ℃ is preferably 50mPa · s or less, more preferably 40mPa · s or less, further preferably 35mPa · s or less, further preferably 30mPa · s or less, and particularly preferably 25mPa · s or less. From the viewpoint of usability, the viscosity of the aqueous liquid cosmetic of the present embodiment at 25 ℃ is preferably 4mPa · s or more, and more preferably 6mPa · s or more.

The viscosity is measured with a brookfield viscometer (BM type) under the following conditions for a sample at 25 ℃.

5 to 50mPa · s: BL adapter (adapter) with 12rpm rotation speed

50 to 500 mPas: rotor No.1, speed 12rpm

250 to 2500mPa · s: rotor No.2, speed of 12rpm

1000-10000 mPa · s: rotor No.3, speed of 12rpm

5000-50000 mPa & s: rotor No.4, rotation speed 12rpm

[ (A) inorganic coloring pigment ]

The inorganic coloring pigment is not particularly limited as long as it is a component used in general cosmetics. Examples thereof include red iron oxide, yellow iron oxide, black iron oxide, cobalt oxide, chromium oxide, blue pigment, iron blue, titanium dioxide, fine particle titanium dioxide, zinc oxide, titanium black (sintered titanium/titanium dioxide), carbon black, barium sulfate, pearl pigment (mica titanium, iron oxide-coated mica titanium, fine particle titanium dioxide-coated mica titanium, barium sulfate-coated mica titanium, fish scale foil, bismuth oxychloride, and aluminum flake powder). The powder may be surface-treated to improve usability, dispersibility, and the like. Examples of the surface treatment include a metal soap, a Silicone Compound (Silicone Compound), a fluoride, a surfactant, and an amino acid Compound.

From the viewpoint of color development and suppression of shade difference and color difference of a drawn line, the aqueous liquid cosmetic composition according to the present embodiment may contain, as the component (a), component (a1), titanium black having a primary particle diameter of 0.15 μm or more (hereinafter, also referred to as component (a 1)), and component (a2) at least one iron oxide selected from the group consisting of red iron oxide, black iron oxide, and yellow iron oxide (hereinafter, also referred to as component (a 2)).

As the component (A1), for example, a commercially available product such as Tilack D (product name, available from Chishihua Kabushiki Kaisha) can be used. (A1) The composition may also be boron-free.

The primary particle size of the component (A1) may be 0.15 to 0.6. mu.m, 0.15 to 0.5. mu.m, or 0.2 to 0.4. mu.m, from the viewpoint of color development and suppression of shade or color difference of a drawn line.

The content of the component (a1) may be 20 to 80% by mass, 22 to 70% by mass, 25 to 60% by mass, or 27 to 50% by mass based on the total amount of the component (a) from the viewpoint of color development and suppression of shade or color difference of drawn lines.

The content of the component (a2) may be 20 to 70% by mass, 25 to 65% by mass, or 30 to 60% by mass based on the total amount of the component (a) from the viewpoint of color development and suppression of shading and color difference of a drawn line.

The total content of the component (a1) and the component (a2) may be 15 to 30% by mass, 16 to 25% by mass, or 17 to 21% by mass based on the total amount of the cosmetic, from the viewpoint of satisfying water resistance, color development, suppression of shade difference and color difference of a drawn line, discharge properties, and dispersion stability at a high level.

From the viewpoint of further improving color development, suppression of shading and color difference of a line, and discharge properties, the mass ratio of the component (a1) to the component (a2) [ (a1)/(a2) ] may be 1/10 to 6/1, or 1/3 to 6/1.

From the viewpoint of improving the discharge property, the mass ratio [ (a1)/(a2) ] of the component (a1) to the component (a2) may be 1/1 to 6/1, 1/1 to 3/1, or 1/1 to 2/1.

The mass ratio of the component (a1) to the component (a2) [ (a1)/(a2) ] may be 1/10 to 1/1, may be 1/5 to 1/1, may be 1/3 to 1/1, or may be 2/5 to 1/1, from the viewpoints of color development, suppression of shade difference and color difference of a line, and dispersion stability.

In the aqueous liquid cosmetic composition according to the present embodiment, the component (a) may further contain (A3) titanium dioxide (hereinafter, also referred to as a component (A3)) in addition to the component (a1) and the component (a 2).

The content of the component (a3) may be 0.01 to 30% by mass, 1 to 28% by mass, or 5 to 27% by mass based on the total amount of the component (a) from the viewpoint of representing a plurality of colors on a drawn line and imparting hiding properties.

From the viewpoint of representing a plurality of colors of the drawn line and imparting hiding property, the content of the component (A3) may be 0 to 60 parts by mass, 3 to 50 parts by mass, or 5 to 40 parts by mass with respect to 100 parts by mass of the total amount of the component (a1) and the component (a 2).

From the viewpoint of forming a line for suppressing the difference in shade and color, the content of carbon black in the aqueous liquid cosmetic composition of the present embodiment may be 10 parts by mass or less with respect to 100 parts by mass of the component (a), or may not contain carbon black.

The content of the component (a) in the aqueous liquid cosmetic composition of the present embodiment is 11 to 35% by mass, may be 15 to 30% by mass, and may be 18 to 28% by mass based on the total amount of the cosmetic composition. When the content of the component (A) is within the above range, a trace for suppressing a difference in shade and color difference can be formed, and a cosmetic excellent in dischargeability and color development can be easily obtained.

[ (B) anionic dispersant ]

The component (B) may be an anionic polymer such as a polycarboxylate such as Polyaspartate, polyacrylate or polymethacrylate. In addition, as the component (B), a water-soluble substance can be used.

Polyaspartate refers to a polymer comprising aspartic acid in the building blocks. The polycarboxylate refers to a homopolymer or copolymer containing a structural unit derived from an ethylenically unsaturated carboxylic acid (e.g., acrylic acid, methacrylic acid, maleic acid, itaconic acid, etc.). Polyacrylates are homopolymers comprising acrylic acid in the structural unit and polymethacrylates are homopolymers comprising methacrylic acid in the structural unit.

As the salt of the polymer, an alkali metal salt such as a sodium salt or a potassium salt, an organic amine salt such as a diethanolamine salt or a triethanolamine salt, or a basic amino acid salt can be used, and among them, a sodium salt or a potassium salt is preferable.

The component (B) may be used singly or in combination of two or more.

The average molecular weight (Mw) of the anionic polymer may be 1000 to 15000, or 2000 to 10000. The average molecular weight (Mw) of the water-soluble polymer can be measured by Gel Permeation Chromatography (GPC) using polyoxyethylene having a known molecular weight as a standard substance.

As the anionic dispersant, commercially available products can be used. Examples of the polyaspartate include アクアデュウ SPA-30 (average molecular weight (Mw)4000, manufactured by Meizisu Co., Ltd.) and Baypore DS100 (average molecular weight (Mw)2500, manufactured by ランクセス Co.). The polyacrylate includes アロン T-50 (average molecular weight (Mw)6000, manufactured by Toyo Seisaku-Sho Co., Ltd.) and アロン A-30SL (average molecular weight (Mw)6000, manufactured by Toyo Seisaku-Sho Co., Ltd.). Examples of the polycarboxylates include アロン A-6330 (average molecular weight (Mw)10000, manufactured by Toyo Seisaku-Sho Co., Ltd.) and アロン A-6001 (average molecular weight (Mw)8000, manufactured by Toyo Seisaku-Sho Co., Ltd.).

The content of the component (B) may be 8 parts by mass or less, 0.1 to 6 parts by mass, 1 to 5 parts by mass, or 1.5 to 3 parts by mass with respect to 100 parts by mass of the component (a) from the viewpoints of having dischargeability and sufficient water resistance, and forming a trace for suppressing a shade difference and a color difference. From the same viewpoint, the content of the component (B) is 8 parts by mass or less, may be 0.5 to 5 parts by mass, may be 1 to 3 parts by mass, or may be 1.5 to 3 parts by mass, based on 100 parts by mass of the total amount of the components (a1) and (a 2).

The content of the component (B) may be 3 to 35 parts by mass, 4 to 30 parts by mass, or 5 to 10 parts by mass with respect to 100 parts by mass of the content (concentration in terms of solid content) of the component (C) from the viewpoint of water resistance.

The content of the component (B) in the aqueous liquid cosmetic composition of the present embodiment may be 0.1 to 1.5% by mass, 0.2 to 1% by mass, or 0.3 to 0.8% by mass, based on the total amount of the cosmetic composition.

[ (C) film-Forming Polymer emulsion ]

As the polymer contained in the film-forming polymer emulsion, a water-insoluble polymer or copolymer containing an alkyl (meth) acrylate monomer as a structural unit can be cited. Examples of the structural unit of the copolymer include vinyl acetate monomers and styrene monomers. In the case of the copolymer, it may be a random copolymer, a graft copolymer, a block copolymer, or a core-shell copolymer.

Specific examples of the film-forming polymer emulsion include an alkyl acrylate copolymer emulsion, an alkyl acrylate/styrene copolymer emulsion, an alkyl acrylate/vinyl acetate copolymer emulsion, and the like. The alkyl acrylate referred to herein also includes alkyl methacrylate. The film-forming polymer emulsion can use water as a solvent, and has a solid content concentration of 30 to 60 mass%.

The film-forming polymer emulsion may be a commercially available one. Examples of the alkyl acrylate copolymer emulsion include ヨドゾール GH800F (product name, solid content concentration of 45 mass% from アクゾノーベル Co.), ヨドゾール GH810F (product name, solid content concentration of 46 mass% from アクゾノーベル Co.), ヨドゾール GH34F (product name, solid content concentration of 42 mass% from アクゾノーベル Co.), ダイトゾール 5000SJ (product name, solid content concentration of 50 mass% from Dadonghuahua chemical industry Co., Ltd.). Examples of the alkyl acrylate/styrene copolymer emulsion include ヨドゾール GH41F (product name, solid content concentration 45 mass% manufactured by アクゾノーベル Co.), ダイトゾール 5000STY (product name, solid content concentration 50 mass% manufactured by Dandoghuachen chemical industry Co., Ltd.), エマポリー CE-119N (product name available from sunlight ケミカルズ Co., Ltd.). Examples of the alkyl acrylate/vinyl acetate copolymer emulsion include ビニゾール 2140L (product name, solid content concentration 45 mass%, produced by Kazakh Kogyo Co., Ltd.).

The film-forming polymer emulsion may be used singly or in combination of two or more.

The content of the component (C) in the aqueous liquid cosmetic composition of the present embodiment may be 3 to 18 mass%, 5 to 15 mass%, 6 to 12 mass%, or 7 to 10 mass% in terms of solid content concentration, based on the total amount of the cosmetic composition. When the content of the component (C) is within the above range, the water resistance of the cosmetic film such as a drawn line is improved, and it is easy to secure the discharge property and suppress the difference in shade and color in the drawn line.

In the aqueous liquid cosmetic composition according to the present embodiment, other components used in general cosmetics, for example, powders and surfactants other than the component (a), water-soluble dispersants other than the component (B), film-forming agents other than the component (C), moisturizers, viscosity modifiers, preservatives, pH modifiers, chelating agents, ultraviolet absorbers, vitamins, cosmetic components, antioxidants, perfumes, and the like may be appropriately blended as necessary in addition to the above components within a range that does not impair the effects of the present invention.

Examples of the powder other than the component (A) include organic pigment powder such as red 201, red 202, red 205, red 226, red 228, orange 203, orange 204, blue 404 and yellow 401, organic pigment powder such as zirconium, barium or aluminum lake powder such as red 3, red 104, red 106, orange 205, yellow 4, yellow 5, green 3 and blue 1, white powder such as carmine, talc, muscovite, phlogopite, biotite, synthetic mica, sericite (serictite), synthetic sericite, kaolin, silicon carbide, bentonite, montmorillonite, diatomaceous earth, aluminum silicate, aluminum magnesium aluminum silicate, calcium magnesium silicate, barium silicate, magnesium silicate, calcium carbonate, magnesium carbonate, hydroxyapatite and boron nitride, polyamide resin, polyethylene resin, polyacrylic resin, polyester resin, and the like, Synthetic resin powders such as fluorine-based resins, cellulose-based resins, polystyrene-based resins, and styrene-acrylic copolymer resins, organic polymer resin powders such as polypropylene-based resins and polyurethane resins, organic low-molecular-weight powders such as zinc stearate and N-acyllysine, and natural organic powders such as silk powders and cellulose powders.

As the surfactant, a hydrophilic nonionic surfactant, an anionic surfactant, a cationic surfactant, an amphoteric surfactant, or the like can be used.

Examples of the hydrophilic nonionic surfactant include polyoxyalkylene alkyl ethers, glyceryl alkyl ethers, fatty acid glycerides, polyglycerin fatty acid esters, sorbitan fatty acid esters, Alkylene Glycol (Alkylene Glycol) adducts thereof, polyalkylene Glycol fatty acid esters, polyglycerin-modified silicones, and polyether-modified silicones. Examples of the anionic surfactant include alkyl phosphates, polyoxyalkylene alkyl ether phosphates, sulfonates, and alkyl sulfates. Examples of the cationic surfactant include alkylamine salts and alkyltrimethylammonium salts. Examples of the amphoteric surfactant include lecithin, a Carbobetaine Type (Carbobetaine Type) amphoteric surfactant, a thiobetaine Type amphoteric surfactant, and an amino acid Type amphoteric surfactant.

As the water-soluble dispersant other than the component (B), a water-soluble polymer such as polyvinylpyrrolidone (PVP), polyvinyl alcohol (PVA), and a vinylpyrrolidone/vinyl acetate copolymer (VP/VA copolymer) can be used.

Examples of the film-forming agent other than component (C) include PVP, PVA, and VP/VA copolymer.

Examples of the viscosity modifier include polysaccharides such as clay minerals and xanthan gum.

The aqueous liquid cosmetic according to the present embodiment can be produced by the following method: the component (a), the component (B), the component (C) and water are dissolved or dispersed, and other components are dissolved or dispersed as necessary, and uniformly stirred and mixed.

The aqueous liquid cosmetic according to the present embodiment can be used as a color cosmetic such as eyeliner, eyebrow cosmetic, eyeshadow, mascara, and the like.

The aqueous liquid cosmetic according to the present embodiment can be used in a known product form used for cosmetics. Examples of the product form include a pen type (pen type) and a bottle type. The pen type includes a mechanical type including a cosmetic storage portion, such as a fiber bundle impregnated with a cosmetic, or a filling portion filled with a cosmetic, and an application portion, such as a pen or a felt joined to the cosmetic storage portion, wherein the mechanical type forcibly discharges the cosmetic by applying a force to the storage portion by a dial (dial) or a knock (knock) or the like, and the automatic pen type discharges the cosmetic by the surface tension of a liquid cosmetic and the action of capillarity.

The aqueous liquid cosmetic according to the present embodiment is preferably used as an automatic pen type cosmetic from the viewpoint of convenience of the method of use and portability. As the automatic pen-type container, a known container can be used, and for example, a liquid cosmetic container disclosed in japanese patent laid-open No. 2016-87094 can be mentioned.

The pen-type cosmetic according to the present embodiment includes an automatic pen-type applicator and the aqueous liquid cosmetic according to the present embodiment filled in the applicator.

Fig. 1 is a schematic sectional view showing a pen-type cosmetic. The overall shape of a pen-type cosmetic 100 shown in fig. 1 is a slender round bar shape similar to a writing instrument, and the pen-type cosmetic 100 generally includes a cylindrical container body 1, a storage section 2 provided in the container body 1 and storing an aqueous liquid cosmetic L according to the present embodiment, a writing brush 3 attached to the tip of the container body 1 and used for applying the aqueous liquid cosmetic L in the storage section 2, a shaft-shaped relay core 4 disposed in the container body 1 and connecting the interior of the storage section 2 and the writing brush 3, and a generally cylindrical coil member 5 attached around the relay core 4. Here, the bottomed cylindrical grip tube 6 is detachably attached to the container body 1 by screwing, so that the user can easily grip the container body 1 and apply the paint. The container body 1 is not limited to a cylindrical shape, and may be a rectangular tube or the like.

In the pen-type cosmetic 100, the storage unit 2, the writing brush 3, and the relay core 4 constitute an automatic pen-type applicator, and the storage unit 2 is filled with the aqueous liquid cosmetic according to the present embodiment.

The container body 1 is formed of, for example, PP (Polypropylene) or the like, and is configured in a cylindrical shape with a flange and a tapered tip. The front end surface of the grip cylinder 6 screwed into the container body 1 abuts against the rear end surface of the flange portion provided on the outer peripheral surface of the container body 1, and the open end surface of the cap 10 attached to the container body 1 abuts against the front end surface of the flange portion. The opening at the rear end of the container body 1 is closed by inserting a tail plug 7 having a bottomed cylindrical shape.

The coil member 5 is used for controlling the flow rate of the aqueous liquid cosmetic L, and has a groove (coil) containing the aqueous liquid cosmetic L, and the cylindrical rear end portion of the coil member 5 is attached to the container body 1 by fitting into a recess portion on the inner peripheral surface of the container body 1. The storage portion 2 is formed between the rear end of the coil member 5 and the tail plug 7 in the container body 1, and the aqueous liquid cosmetic L is filled in the storage portion 2.

The relay core 4 is formed of, for example, acrylic resin, and extends in the axial direction so as to pass through the cylindrical hole of the coil member 5, and the relay core 4 is attached to the coil member 5 by fitting the tip side thereof to the tip side of the coil member 5. The relay core 4 has a rear end portion inserted into the housing portion 2 and a front end portion inserted into the writing brush 3, thereby connecting the interior of the housing portion 2 and the writing brush 3. The relay core 4 can suck the aqueous liquid cosmetic L in the storage unit 2 by capillary action and supply the cosmetic L to the writing brush 3.

In the pen-type cosmetic 100 shown in fig. 1, the applied body is a writing brush, but may be replaced with a felt tip or a urethane tip.

A bottomed cylindrical cap 10 for protecting the writing brush 3 and the like is detachably attached to the distal end side of the container main body 1 by fitting.

In the pen-type cosmetic product 100, the agitator 20 movable in the axial direction and the coil spring 21 expandable and contractible in the axial direction are housed in the housing portion 2 together with the aqueous liquid cosmetic L. Here, as a particularly preferable mode, the stirrer 20 is a sphere, but may be a polyhedron, a cone, or the like.

The coil spring 21 is an integrally formed spring in which a plurality of spring portions (here, two spring portions having different diameters) having different diameters are integrally connected in the axial direction, and is formed of SUS or the like, for example. The coil spring 21 includes a small-diameter spring portion having a smaller diameter than the diameter of the agitator 20 in a rear half portion, and a large-diameter spring portion having a larger diameter than the diameter of the agitator 20 is provided adjacent to the small-diameter spring portion in the axial direction in front of the small-diameter spring portion.

Here, since the agitator 20 is provided so as to be movable in the axial direction within the large-diameter spring portion constituting the coil spring 21, if the user vibrates the pen-type cosmetic product 100, the agitator 20 moves in the axial direction, and the aqueous liquid cosmetic product L is agitated by the movement of the agitator 20.

In the pen-type cosmetic 100 configured as described above, the aqueous liquid cosmetic L in the storage portion 2 flows out to the writing brush 3 on the tip side via the relay core 4, and is applied by the user using the writing brush 3. In the pen-type cosmetic product 100 according to the present embodiment, the stirrer 20 and the coil spring 21 are provided, so that the aqueous liquid cosmetic L can be efficiently discharged to the writing brush 3, but the structure may be changed to one not provided with the stirrer 20 and the coil spring 21.

As described above, the pen-type cosmetic according to the present embodiment is described by taking as an example a cosmetic including a container having a so-called direct-liquid type structure, but the container for the cosmetic is not particularly limited to having such a structure, and a known structure may be used. For example, a container having a so-called cotton-core type structure may be used, in which the coil member 5, the stirrer 20, and the coil spring 21 of the pen-type cosmetic 100 are omitted, the cotton-core member filled with the aqueous liquid cosmetic L is stored in the storage portion 2, and the aqueous liquid cosmetic L is sucked up and supplied to the writing brush 3 through the intermediate core 4 having a portion on the rear end side entering the interior of the cotton-core member.

[ examples ]

The present invention will be described in more detail with reference to examples, but the present invention is not limited to the following examples.

< preparation of aqueous liquid cosmetic >

Examples 1 to 9 and comparative examples 1 to 7

The components shown in tables 1 to 4 were mixed by a disperser (disper) at the ratio (mass%) shown in the tables, and the aqueous liquid cosmetic was obtained. In the table, the values of the polymer emulsion, the anionic dispersant and the nonionic dispersant indicate the amounts of solid components to be blended.

The following materials were used for each of the components shown in tables 1 to 4.

Titanium black-1: titanium Black (produced by Chishihua chemical Co., Ltd., product name "Tilack D TM-B-CSM", primary particle diameter: 0.2 to 0.4 μm)

Titanium black-2: titanium Black (produced by Chisui Kabushiki KaishA, product name "Tilack D TS-A-CSM", primary particle diameter: 0.03 to 0.1 μm)

Sodium polyaspartate: sodium polyaspartate (produced by Siberian Willd., product name "アクアデュウ SPA-30B", average molecular weight (Mw)4000)

Sodium polyacrylate: sodium polyacrylate (available from Toya Synthesis Co., Ltd., product name "アロン T-50", average molecular weight (Mw)6000)

Sodium polycarboxylate: sodium polyacrylate (available from Toya Synthesis Co., Ltd., product name "アロン A-6330", average molecular weight (Mw)10000)

Polymer emulsion-1: alkyl acrylate copolymer emulsion (product name "ヨドゾール GH 800F" from アクゾノーベル Co., Ltd., solid content concentration: 45% by mass)

Nonionic dispersant-1: behenyl polyether-30 (Polyoxylene Behenyl Ethers, manufactured by daylight ケミカルズ K.K.; product name "NIKKOL BB-30")

< viscosity of aqueous liquid cosmetic >

The viscosity of the sample at 25 ℃ was measured using a Brookfield viscometer (BM type) under the following conditions. The measurement time was set to 1 minute.

5 to 50mPa · s: BL adapter, speed 12rpm

50 to 500 mPas: rotor No.1, speed 12rpm

250 to 2500mPa · s: rotor No.2, speed of 12rpm

1000-10000 mPa · s: rotor No.3, speed of 12rpm

5000-50000 mPa & s: rotor No.4, speed of 12rpm

< evaluation of aqueous liquid cosmetic preparation >

The discharge property, difference in thickness, water resistance, dispersion stability, and color development of the aqueous liquid cosmetic obtained above were evaluated by the following evaluation methods.

(discharge property)

The above-obtained aqueous liquid cosmetic was filled in the storage part of an automatic pen-type liquid eyeliner container (applicator: writing brush, relay core: acrylic resin) having the same structure as that shown in fig. 1 to produce a filled product.

The container filling was drawn on the back of the hand, and the quality of the discharge when 3 lines of 2mm in width and 4cm in length were applied was visually checked, and the discharge property was evaluated according to the following evaluation criteria.

[ evaluation standards ]

A: the liquid is discharged in sufficient amount, and the line is drawn uniformly.

B: the liquid is discharged in a trouble-free amount, and the tracing is substantially uniform.

C: the amount of liquid discharged is small, and the line tracing is slightly uneven.

D: the amount of liquid discharged is small, and the line tracing is whitish.

(poor concentration)

The difference in shade of the drawn line was evaluated by using the container filling obtained by the same method as described above by 10 cosmetic evaluation panelists. For evaluation of the shading difference, 5-level evaluations were performed according to the following evaluation criteria, and each sample was scored, and further, the average score of the scores of all panelists was determined according to the following determination criteria.

[ scoring: evaluation criteria

And 5, dividing: the line drawn has no shading difference at all.

And 4, dividing: the trace has substantially no shading difference.

And 3, dividing: the trace is slightly poor in shade.

And 2, dividing: the tracing has shade difference.

1 minute: the shading difference is large.

[ decision criteria (average score of scores) ]

A: 4 or more

B: 3 or more and less than 4

C: 2 or more and less than 3

D: less than 2

(Water resistance)

The cosmetic was applied to the forearm, dried for 10 minutes, soaked with running water, rubbed with the abdomen, visually observed for residue of the application, and evaluated for water resistance according to the following evaluation criteria.

[ evaluation standards ]

A: the coated portion did not peel off (excellent).

B: the smear portion peeled off little (good).

C: the applied portion was slightly peeled off (slightly poor).

D: the coated portion was peeled off more (defective).

(Dispersion stability (Settlement resistance))

The sample was placed in a transparent bottle and left to stand at 25 ℃ for 1 day, and the sedimentation state of the powder components was visually confirmed, and the dispersion stability (sedimentation resistance) was evaluated according to the following evaluation criteria.

[ evaluation standards ]

A: the powder can be visually observed in the whole liquid.

B: the powder was visually observed up to the intermediate portion of the liquid.

C: the powder can be visually observed in the lower part of the liquid.

D: the powder can only be observed visually at the bottom of the liquid.

(color development)

The container filling obtained by the same method as described above was drawn on the back of the hand, and the color development (hiding property) of the drawn line was visually confirmed, and the color development was evaluated according to the following evaluation criteria.

[ evaluation standards ]

A: the drawn line is fully developed to cover the skin.

B: the line is colored, and basically covers the skin.

C: the drawn line is not sufficiently colored and has a slightly weak skin-covering property.

D: the drawn line is weak in color and does not cover the skin.

[ Table 1]

[ Table 2]

[ Table 3]

[ Table 4]

Description of the symbols

1 … container main body, 2 … accommodating part, 3 … writing brush (smearing body), 20 … stirring piece, 21 … coil spring (small diameter spring part and large diameter spring part), 100 … pen type cosmetic, and L … aqueous liquid cosmetic.

Claims

1. An aqueous liquid cosmetic material comprising:

(A) inorganic coloring pigment, (B) anionic dispersant and (C) film-forming polymer emulsion,

the content of the component (A) is 11-35% by mass based on the total amount of the cosmetic,

the component (A) contains (A1) titanium black having a primary particle diameter of 0.15 μm or more and (A2) at least one iron oxide selected from the group consisting of red iron oxide, black iron oxide and yellow iron oxide,

the content of the component (B) is 8 parts by mass or less based on 100 parts by mass of the total amount of the component (A1) and the component (A2).

2. The aqueous liquid cosmetic according to claim 1, wherein,

the aqueous liquid cosmetic has a viscosity of 50 mPas or less at 25 ℃.

3. The aqueous liquid cosmetic according to claim 1 or 2, wherein,

the mass ratio of the component (A1) to the component (A2), (A1)/(A2), is 1/10-6/1.

4. The aqueous liquid cosmetic according to any one of claims 1 to 3, wherein,

the component (B) contains an anionic polymer having an average molecular weight (Mw) of 1000 to 15000.

5. The aqueous liquid cosmetic according to any one of claims 1 to 4, wherein,

the content of the component (C) is 3-18 mass% in terms of solid content based on the total amount of the cosmetic.

6. The aqueous liquid cosmetic according to any one of claims 1 to 5, wherein,

the aqueous liquid cosmetic contains no carbon black.

7. A pen-type cosmetic comprising:

an automatic pen-shaped applicator and the aqueous liquid cosmetic composition according to any one of claims 1 to 6 filled in the applicator.